From: joerg1985 <16140691+joerg1985@users.noreply.github.com>
Date: Wed, 18 Sep 2024 17:39:22 +0000 (+0200)
Subject: [rrd4j] Improved the interpolation workaround (#17437)
X-Git-Url: https://git.basschouten.com/?a=commitdiff_plain;h=5a3a0c0ea2526ab31a9fbeaec4e502b8eddf8201;p=openhab-addons.git

[rrd4j] Improved the interpolation workaround (#17437)

Signed-off-by: Jörg Sautter <joerg.sautter@gmx.net>
---

diff --git a/bundles/org.openhab.persistence.rrd4j/src/main/java/org/openhab/persistence/rrd4j/internal/RRD4jPersistenceService.java b/bundles/org.openhab.persistence.rrd4j/src/main/java/org/openhab/persistence/rrd4j/internal/RRD4jPersistenceService.java
index ed3d3d10d9..059e8cf6cc 100644
--- a/bundles/org.openhab.persistence.rrd4j/src/main/java/org/openhab/persistence/rrd4j/internal/RRD4jPersistenceService.java
+++ b/bundles/org.openhab.persistence.rrd4j/src/main/java/org/openhab/persistence/rrd4j/internal/RRD4jPersistenceService.java
@@ -373,7 +373,7 @@ public class RRD4jPersistenceService implements QueryablePersistenceService {
                 if (timestamp - 1 > db.getLastUpdateTime()) {
                     // only do it if there is not already a value
                     double lastValue = db.getLastDatasourceValue(DATASOURCE_STATE);
-                    if (!Double.isNaN(lastValue)) {
+                    if (!Double.isNaN(lastValue) && lastValue != value) {
                         Sample sample = db.createSample();
                         sample.setTime(timestamp - 1);
                         sample.setValue(DATASOURCE_STATE, lastValue);